Analgesia efficacy of erector spinae plane block in laparoscopic abdominal surgeries: a systemic review and meta-analysis

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Abstract
Background: Multimodal analgesia is now widely practised to minimise postoperative opioid consumption while optimising pain control. The aim of this meta-analysis was to assess the analgesic efficacy of erector spinae plane block (ESPB) in patients undergoing laparoscopic abdominal surgeries. This will be determined by perioperative opioid consumption, subjective pain scores, and incidences of postoperative nausea and vomiting. Methods: The authors systemically searched electronic databases for randomised controlled trials (RCTs) published up to February 2023 comparing ESPB with other adjuvant analgesic techniques in laparoscopic abdominal surgeries. Nine randomised controlled trials encompassing 666 subjects were included in our study. Results: ESPB was shown to reduce postoperative opioid consumption [mean difference (MD) of −5.95 mg (95% CI: −8.86 to −3.04; PI 2=89%], intraoperative opioid consumption MD of −102.4 mcg (95% CI: −145.58 to −59.21; PI 2=39%, and incidence of nausea [RR 0.38 (95% CI: 0.25–0.60; PI 2=0%] and vomiting [RR 0.32 (95% CI: 0.17–0.63; P=0.0009); I 2=0%] in laparoscopic abdominal surgeries. Subgroup analysis on laparoscopic colorectal surgeries further showed reduction in postoperative pain scores MD of −0.68 (95% CI: −0.94 to −0.41); PI 2=0%]. Conclusions: This study concludes that ESPB is a valuable technique with proven efficacy to potentially promote faster postoperative recovery through optimising pain control while minimising opioid requirements.

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